CN103318980A - Processing device and processing method of pulping waste water - Google Patents
Processing device and processing method of pulping waste water Download PDFInfo
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- CN103318980A CN103318980A CN2013102759197A CN201310275919A CN103318980A CN 103318980 A CN103318980 A CN 103318980A CN 2013102759197 A CN2013102759197 A CN 2013102759197A CN 201310275919 A CN201310275919 A CN 201310275919A CN 103318980 A CN103318980 A CN 103318980A
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- waste liquid
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- half dense
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- 238000004537 pulping Methods 0.000 title claims abstract description 60
- 239000002351 wastewater Substances 0.000 title claims abstract description 22
- 238000003672 processing method Methods 0.000 title 1
- 238000011084 recovery Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims description 226
- 239000007788 liquid Substances 0.000 claims description 147
- 238000001704 evaporation Methods 0.000 claims description 54
- 230000008020 evaporation Effects 0.000 claims description 54
- 239000010812 mixed waste Substances 0.000 claims description 44
- 239000003513 alkali Substances 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 239000012141 concentrate Substances 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims 3
- 239000010808 liquid waste Substances 0.000 abstract description 30
- 238000002156 mixing Methods 0.000 abstract description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000000706 filtrate Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010786 composite waste Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a processing device of pulping waste water. The processing device comprises a pulping liquid waste groove, a half-thick liquid waste groove, a liquid waste pump, a mixing liquid waste groove, an evaporator and a soda recovery furnace, wherein the pulping liquid waste groove is used for placing pulping liquid waste; the half-thick liquid waste groove is used for placing the concentrated pulping liquid waste; the liquid waste pump is used for mixing the liquid waste in the pulping liquid waste groove and the liquid waste in the half-thick liquid waste groove, and an inlet of the liquid waste pump is connected with the pulping liquid waste groove and the half-thick liquid waste groove; the mixing liquid waste groove is connected with an outlet of the liquid waste pump and is used for placing the liquid waste flowing out from the liquid waste pump; the evaporator is connected with an outlet of the mixing liquid waste groove, is used for concentrating the liquid waste output from the mixing liquid waste groove, and is provided with two outlets, and one of the outlets is connected with an inlet of the half-thick liquid waste groove; the soda recovery furnace is connected with the other outlet of the evaporator and is used for burning the concentrated liquid waste of the evaporator. The invention also provides a method using the processing device. The processing device provided by the invention has the advantages that the pulping liquid waste is concentrated into a half-thick liquid waste, and the concentration meets a requirement by mixing the half-thick liquid waste and the pulping waste water.
Description
Technical field
The present invention relates to a kind for the treatment of unit and treatment process of pulp-making waste-water.
Background technology
Pulp-making waste-water (Heisui River) derives from chip washing, the overflow of polydisc clear filtrate, screw extrusion press extruding filtrate, screw extrusion press wash filtrate and waste residue and reclaims the composite waste of a plurality of workshop sections such as filtrate.The treatment process of pulp-making waste-water is sent into the alkali recovery furnace burning after normally it being condensed into dense waste liquid.Also need use evaporation unit in this treatment process, the Main Function of this evaporation unit is the concentrating spent liquor that the Waste water concentrating that will produce in the pulping process becomes the required certain concentration of alkali recovery boiler (such as 60% ~ 70%).The concentration deficiency of concentrating spent liquor will cause the abnormal combustion of alkali recovery furnace.A certain amount of steam can only evaporate a certain amount of water, under the same quantity of steam, the concentration of the concentrating spent liquor of pulping waste liquor concentration then evaporation unit not up to standard output can not be up to standard, so evaporation unit has certain limitation (requiring 2% ~ 5% as admittedly containing) to the concentration of the waste liquid that enters evaporation unit.
Yet, the concentration of the pulp-making waste-water at different sources place is not to keep constant, but often change, there is certain fluctuation in its concentration of pulp-making waste-water that causes mixing, the variation of concentration can be reflected to the variation of the boiling point of waste water, thereby cause the unstable of evaporation concentration workshop section, the concentrated pulp-making waste-water that evaporation unit is produced can't reach the required certain concentration of alkali recovery boiler, on the operation existence impact of alkali recovery furnace.
Summary of the invention
In view of above situation, be necessary to provide a kind for the treatment of unit of the pulp-making waste-water that can effectively address the above problem.
In addition, also be necessary to improve a kind for the treatment of process that above-mentioned treatment unit carries out pulp-making waste-water of using.
A kind for the treatment of unit of pulp-making waste-water, it comprises:
The pulping waste liquor groove is in order to accommodating pulping waste liquor;
Half dense waste liquid tank is in order to the pulping waste liquor after accommodating the concentrating;
Waste drains pump, in order to the waste liquid in the waste liquid in the pulping waste liquor groove and the half dense waste liquid tank is mixed, the entrance of this waste drains pump connects pulping waste liquor groove and half dense waste liquid tank;
The mixed waste liquor groove, it connects the waste liquid pump outlet, in order to the waste liquid that flows out in the accommodating waste drains pump;
Evaporation unit, it connects the outlet of mixed waste liquor groove, and in order to the waste liquid of exporting from the mixed waste liquor groove is concentrated, this evaporation unit is provided with two outlets, and wherein an outlet connects the entrance of half dense waste liquid tank;
Alkali recovery furnace, it connects another outlet of this evaporation unit, burns in order to the waste liquid after concentrated to evaporation unit.
A kind ofly use the treatment process that above-mentioned treatment unit carries out pulp-making waste-water, it comprises:
When half dense waste liquid in the half dense waste liquid tank was inadequate, the pulping waste liquor in this pulping waste liquor groove was successively through waste drains pump and mixed waste liquor groove, then flow in the evaporation unit to concentrate, concentrated after waste liquid deliver in the half dense waste liquid tank;
When half dense waste liquid in the half dense waste liquid tank was sufficient, it specifically comprised the steps:
Pulping waste liquor mixes through waste drains pump successively with the half dense waste liquid that is somebody's turn to do half dense waste liquid tank in this pulping waste liquor groove, then flow in the mixed waste liquor groove from waste drains pump;
Waste liquid in the mixed waste liquor groove flows into evaporation unit and concentrates;
Deliver to the alkali recovery furnace burning if the waste liquid concentration after evaporation unit is concentrated satisfies the requirement of alkali recovery furnace, deliver to half dense waste liquid tank if concentration does not satisfy the requirement of alkali recovery furnace.
The present invention is condensed into certain density waste liquid in advance by the pulping waste liquor that concentration is not up to standard, again by this concentrating spent liquor and pulp-making waste-water blending, forms the waste liquid that concentration meets the demands substantially.This treatment unit is simple in structure, is easy to realize.
Description of drawings
Fig. 1 is the schematic diagram of the treatment unit of preferred embodiment of the present invention.
The main element nomenclature
| |
100 |
| The pulping |
10 |
| The |
11 |
| Half dense |
20 |
| Half |
21 |
| The |
23 |
| |
30 |
| The mixed |
40 |
| The |
41 |
| |
50 |
| The |
51 |
| The first switch- |
53 |
| The |
55 |
| |
70 |
Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
Embodiment
See also Fig. 1, the treatment unit 100 of preferred embodiment pulp-making waste-water of the present invention comprises pulping waste liquor groove 10, half dense waste liquid tank 20, waste drains pump 30, mixed waste liquor groove 40, evaporation unit 50 and alkali recovery furnace 70.
Be equipped with pulping waste liquor in this pulping waste liquor groove 10.Should be equipped with concentrated pulping waste liquor (hereinafter to be referred as half dense waste liquid) in the half dense waste liquid tank 20, should half dense waste liquid be after evaporation unit 50 is concentrated in advance, and concentration is up to standard and can't directly send into the pulping waste liquor that alkali recovery furnace 70 burns.
This waste drains pump 30 is in order to mix two kinds of waste liquids from this pulping waste liquor groove 10 and half dense waste liquid tank 20.The entrance of this waste drains pump 30 connects described pulping waste liquor groove 10 and half dense waste liquid tank 20, and the outlet of this waste drains pump 30 connects the entrance of described mixed waste liquor groove 40.
This mixed waste liquor groove 40, in order to the accommodating mixed waste liquid that flows out from waste drains pump 30, the outlet of this mixed waste liquor groove 40 connects the entrance of described evaporation unit 50.
This evaporation unit 50 is in order to carry out evaporation concentration to waste liquid, and this evaporation unit 50 is provided with two outlets, and wherein an outlet connects described alkali recovery furnace 70, and another outlet connects the entrance of described half dense waste liquid tank 20.
When half dense waste liquid is not enough, the pulping waste liquor in the pulping waste liquor groove 10 is only arranged, unstable because of its concentration, directly enter the input requirements that alkali recovery furnace 70 is difficult to meet alkali recovery furnace 70 after entering evaporation unit 50 evaporation concentration.At this moment, the pulping waste liquor in the pulping waste liquor groove 10 can be flowed into evaporation unit 50 and concentrates in advance through waste drains pump 30, mixed waste liquor groove 40, flow into again after concentrating in the half dense waste liquid tank 20 to replenish half dense waste liquid.
When half dense waste liquid is sufficient, half according to a certain percentage blending of dense waste liquid in pulping waste liquor in the pulping waste liquor groove 10 and the half dense waste liquid tank 20, then mix to reach the desired concn demand through waste drains pump 30, mixed waste liquor groove 40 together, flow into evaporation unit 50 again and concentrate, the waste liquid after concentrating is then delivered to alkali recovery furnace 70 burnings.If still do not meet the demand of evaporation unit 50 through the liquid waste concentration of mixed waste liquor groove 40 mixing, also be not reach the requirement that enters in the alkali recovery furnace 70 after evaporation unit 50 evaporation concentration, then after concentrating, evaporation unit 50 delivers to again half dense waste liquid tank 20, the as a supplement usefulness of half dense waste liquid.
Waste liquid after concentrated for evaporation unit 50 flows into half dense waste liquid tank 20 and still flows into alkali recovery furnace 70 and can realize by following mode: waste liquid after concentrated in 51 pairs of evaporation units 50 of the first concentration detector is set carries out concentration and detect, in evaporation unit 50 corresponding two exits that connect alkali recovery furnaces 70 and half dense waste liquid tank 20 the first switch-valve 53 and second switch valve 55 are set respectively.In the present embodiment, this first concentration detector 51 is refractometer.
First kind of way: this first switch-valve 53, second switch valve 55 are the switch-valve of manual control, when detecting concentration, this first concentration detector 51 meets the concentration range that alkali recovery furnace 70 requires, then open the first switch-valve 53, close second switch valve 55, the waste liquid after concentrating in the evaporation unit 50 flows into alkali recovery furnace 70; When detecting concentration outside the threshold concentration scope, then open second switch valve 55, close the first switch-valve 53, the waste liquid after concentrating in the evaporation unit 50 flows into half dense waste liquid tank 20.
The second way: this first switch-valve 53, second switch valve 55 are the switch-valve that carries Controlling System, and be electrically connected with this first concentration detector 51 and consist of a closed loop automatic control system, so that the first switch-valve 53 and second switch valve 55 carry out opening and closing according to the detected result of this first concentration detector 51.Be specially: this first concentration detector 51 presets a threshold concentration scope (meeting the concentration range that alkali recovery furnace 70 requires), when detecting concentration, this first concentration detector 51 is arranged in the threshold concentration scope, then the first switch-valve 53 is opened, second switch valve 55 cuts out, and the waste liquid after concentrating in the evaporation unit 50 flows into alkali recovery furnace 70; When detecting concentration outside the threshold concentration scope, then second switch valve 55 is opened, and the first switch-valve 53 cuts out, and the waste liquid after concentrating in the evaporation unit 50 flows into half dense waste liquid tank 20.
Be provided with the first valve 11 between this pulping waste liquor groove 10 and the waste drains pump 30, can flow into or not flow in the waste drains pump 30 with the waste liquid of controlling pulping waste liquor groove 10.Partly be provided with the second valve 23 between dense waste liquid tank 20 and the waste drains pump 30, can flow into or not flow in the waste drains pump 30 with the waste liquid waste liquid of controlling half dense waste liquid tank 20.
For realizing that mixed waste liquor groove 40 obtains the waste liquid that concentration meets the demands, and can realize in the following manner.
This first valve 11 is switch-valve, and the second valve 23 flows into the size of the flow of waste drains pump 30 for carrying the flowrate control valve of Controlling System with the waste liquid of control half dense waste liquid tank 20; Being provided with simultaneously the second concentration detector 41 in this mixed waste liquor groove 40 detects the waste liquid in the mixed waste liquor groove 40 is carried out concentration.This second valve 23 and this second concentration detector 41 are electrically connected and consist of a closed loop automatic control system, so that this second valve 23 is regulated the flow of half dense waste liquid according to the detected result of the second concentration detector 41.Be specially: this second concentration detector 41 has preseted a threshold concentration C, and the concentration that monitors waste liquid in the mixed waste liquor groove 40 when this second concentration detector 41 is less than threshold concentration C, and then the second valve 23 is regulated the flow that increases half dense waste liquid; The concentration that monitors waste liquid in the mixed waste liquor groove 40 when this second concentration detector 41 is greater than threshold concentration C, and then the second valve 23 is regulated the flow that reduces half dense waste liquid.So, can realize accurately the concentration of the waste liquid in the mixed waste liquor groove 40.In the present embodiment, this second concentration detector 41 is refractometer.
Understandable, should half dense waste liquid tank 20 with the second valve 23 between also be connected with half dense pump 21, lift that should half dense pump 21 (useful energy that unit weight liquid is flowed through and obtained behind the pump) needs to satisfy waste liquid is sent into the needs while of mixed waste liquor groove 40 greater than the liquid level of pulping waste liquor groove 10 maximums.Should half dense pump 21 can guarantee that, half dense waste liquid tank liquid level the highest when pulping waste liquor tank liquor position near in the minimum situation, pulping waste liquor can not occur flow backward to the partly situation of dense waste liquid tank 20.
The below further introduces the method for work of the treatment unit 100 of this pulp-making waste-water, and it comprises:
When half dense waste liquid in the half dense waste liquid tank 20 is inadequate, it specifically comprises the steps: to open the first valve 11 makes in this pulping waste liquor groove 10 pulping waste liquor successively through waste drains pump 30 and mixed waste liquor groove 40, then flow in the evaporation unit 50 and concentrate, concentrated after waste liquid deliver in the half dense waste liquid tank 20.
When half dense waste liquid in the half dense waste liquid tank 20 was sufficient, it specifically comprised the steps:
Step S1: open the first valve 11 and the second valve 23, pulping waste liquor in this pulping waste liquor groove 10 and half dense waste liquid that should half dense waste liquid tank 20 are mixed through waste drains pump 30, then from waste drains pump 30, flow in the mixed waste liquor groove 40.
Step S2: the waste liquid in 41 pairs of mixed waste liquor grooves 40 of the second concentration detector carries out concentration and detects, and the concentration that monitors waste liquid in the mixed waste liquor groove 40 when this second concentration detector 41 is less than threshold concentration C, and then the second valve 23 is regulated the flow that increases half dense waste liquid; The concentration that monitors waste liquid in the mixed waste liquor groove 40 when this second concentration detector 41 is greater than threshold concentration C, and then the second valve 23 is regulated the flow that reduces half dense waste liquid.
Step S3: the waste liquid in the mixed waste liquor groove 40 flows into evaporation unit 50 and concentrates.
Step S4: deliver to alkali recovery furnace 70 burnings if the waste liquid concentration after evaporation unit 50 concentrates satisfies the requirement of alkali recovery furnace 70, deliver to half dense waste liquid tank 20 if concentration does not satisfy the requirement of alkali recovery furnace 70.
In addition, those skilled in the art also can make various modifications, interpolation and the replacement on other form and the details in claim of the present invention scope of disclosure and spirit.Certainly, these all should be included within the present invention's scope required for protection according to the variations such as various modifications, interpolation and replacement that spirit of the present invention is made.
Claims (13)
1. the treatment unit of a pulp-making waste-water, it is characterized in that: this treatment unit comprises:
The pulping waste liquor groove is in order to accommodating pulping waste liquor;
Half dense waste liquid tank is in order to the pulping waste liquor after accommodating the concentrating;
Waste drains pump, in order to the waste liquid in the waste liquid in the pulping waste liquor groove and the half dense waste liquid tank is mixed, the entrance of this waste drains pump connects pulping waste liquor groove and half dense waste liquid tank;
The mixed waste liquor groove, it connects the waste liquid pump outlet, in order to the waste liquid that flows out in the accommodating waste drains pump;
Evaporation unit, it connects the outlet of mixed waste liquor groove, and in order to the waste liquid of exporting from the mixed waste liquor groove is concentrated, this evaporation unit is provided with two outlets, and wherein an outlet connects the entrance of half dense waste liquid tank;
Alkali recovery furnace, it connects another outlet of this evaporation unit, burns in order to the waste liquid after concentrated to evaporation unit.
2. treatment unit as claimed in claim 1 is characterized in that: should half dense waste liquid tank accommodating pulping waste liquor after concentrated refers to after evaporation unit is concentrated, and concentration is up to standard and can't directly send into the pulping waste liquor that alkali recovery furnace burns.
3. treatment unit as claimed in claim 1 is characterized in that: be provided with the first valve between this pulping waste liquor groove and the waste drains pump, can flow into or do not flow in the waste drains pump with the waste liquid of control pulping waste liquor groove; Partly be provided with the second valve between dense waste liquid tank and the waste drains pump, can flow into or not flow in the waste drains pump with the waste liquid of controlling half dense waste liquid tank.
4. treatment unit as claimed in claim 3, it is characterized in that: this first valve is switch-valve, this second valve is the flowrate control valve that carries Controlling System flows into waste drains pump with the waste liquid of control half dense waste liquid tank uninterrupted; To being provided with the second concentration detector the waste liquid in the mixed waste liquor groove is carried out the concentration detection by the mixed waste liquor groove, this second valve and this second concentration detector are electrically connected and are set to a closed loop automatic control system, so that this second valve is regulated the flow of the waste liquid of half dense waste liquid tank according to the detected result of the second concentration detector.
5. treatment unit as claimed in claim 4, it is characterized in that: this second concentration detector has preseted a threshold concentration, the concentration that monitors waste liquid in the mixed waste liquor groove when this second concentration detector is less than threshold concentration, and then the second valve regulated increases the flow of half dense waste liquid; The concentration that monitors waste liquid in the mixed waste liquor groove when this second concentration detector is greater than threshold concentration, and then the second valve regulated reduces the flow of half dense waste liquid.
6. treatment unit as claimed in claim 4, it is characterized in that: this second concentration detector is refractometer.
7. treatment unit as claimed in claim 1, it is characterized in that: this evaporation unit is provided with the first concentration detector the waste liquid after concentrated in the evaporation unit is carried out the concentration detection, in corresponding two exits that connect alkali recovery furnace and half dense waste liquid tank of evaporation unit the first switch-valve and second switch valve is set respectively.
8. treatment unit as claimed in claim 7, it is characterized in that: this first switch-valve, second switch valve are the switch-valve with Controlling System, this first switch-valve, second switch valve and this first concentration detector are electrically connected and consist of a closed loop automatic control system, so that the first switch-valve and second switch valve carry out opening and closing according to the detected result of this first concentration detector.
9. treatment unit as claimed in claim 8, it is characterized in that: this first concentration detector has preseted a threshold concentration scope, this threshold concentration scope is the concentration range of alkali recovery furnace requirement, the concentration that detects when the first concentration detector is arranged in the threshold concentration scope, then the first switch-valve is opened, the second switch valve cuts out, and the waste liquid after concentrating in the evaporation unit flows into alkali recovery furnace; The concentration that detects when the first concentration detector is outside the threshold concentration scope, and then the second switch valve is opened, and the first switch-valve cuts out, and the waste liquid after concentrated in the evaporation unit flows into half dense waste liquid tank.
10. treatment unit as claimed in claim 7, it is characterized in that: this first concentration detector is refractometer.
11. treatment unit as claimed in claim 1, it is characterized in that: should half dense waste liquid tank with the second valve between also be connected with half dense pump, should half dense pump lift need satisfy waste liquid is sent into the needs while of mixed waste liquor groove greater than the liquid level of pulping waste liquor groove maximum.
12. an application rights requires 1 described treatment unit to carry out the treatment process of pulp-making waste-water, it comprises:
When half dense waste liquid in the half dense waste liquid tank was inadequate, the pulping waste liquor in this pulping waste liquor groove was successively through waste drains pump and mixed waste liquor groove, then flow in the evaporation unit to concentrate, concentrated after waste liquid deliver in the half dense waste liquid tank;
When half dense waste liquid in the half dense waste liquid tank was sufficient, it specifically comprised the steps:
Pulping waste liquor mixes through waste drains pump successively with the half dense waste liquid that is somebody's turn to do half dense waste liquid tank in this pulping waste liquor groove, then flow in the mixed waste liquor groove from waste drains pump;
Waste liquid in the mixed waste liquor groove flows into evaporation unit and concentrates;
Deliver to the alkali recovery furnace burning if the waste liquid concentration after evaporation unit is concentrated satisfies the requirement of alkali recovery furnace, deliver to half dense waste liquid tank if concentration does not satisfy the requirement of alkali recovery furnace.
13. treatment process as claimed in claim 12, it is characterized in that: this treatment unit also comprises the second valve that is arranged between this half dense waste liquid tank and the waste drains pump, and the second concentration detector that the waste liquid in the mixed waste liquor groove is carried out the concentration detection, this second valve is the flowrate control valve that carries Controlling System, this second concentration detector has preseted a threshold concentration, and this second valve and this second concentration detector are electrically connected and are set to a closed loop automatic control system; This treatment process also comprises carries out the step that concentration detected and regulated half dense waste liquid flow to the waste liquid in the mixed waste liquor groove, be specially monitor waste liquid in the mixed waste liquor groove when this second concentration detector concentration less than threshold concentration, then the second valve regulated increases the flow of half dense waste liquid; The concentration that monitors waste liquid in the mixed waste liquor groove when this second concentration detector is greater than threshold concentration, and then the second valve regulated reduces the flow of half dense waste liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310275919.7A CN103318980B (en) | 2013-07-03 | 2013-07-03 | Processing device and processing method of pulping waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310275919.7A CN103318980B (en) | 2013-07-03 | 2013-07-03 | Processing device and processing method of pulping waste water |
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| Publication Number | Publication Date |
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| CN103318980A true CN103318980A (en) | 2013-09-25 |
| CN103318980B CN103318980B (en) | 2014-08-20 |
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| CN201310275919.7A Active CN103318980B (en) | 2013-07-03 | 2013-07-03 | Processing device and processing method of pulping waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107970472A (en) * | 2016-10-21 | 2018-05-01 | 伊西康公司 | Carried out disinfection agent dynamic dosage by concentrate compensation of degrading |
| CN110054334A (en) * | 2018-01-18 | 2019-07-26 | 金东纸业（江苏）股份有限公司 | A kind of pretreatment system of pulping waste liquor |
| CN110575676A (en) * | 2019-09-25 | 2019-12-17 | 泉州洛江吉如机械设计有限公司 | sanitary towel production is with concentrated light-operated wall from mechanical equipment |
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| JP2008138321A (en) * | 2006-12-01 | 2008-06-19 | G Tec:Kk | Method and apparatus for concentrating black liquor |
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| CN107970472A (en) * | 2016-10-21 | 2018-05-01 | 伊西康公司 | Carried out disinfection agent dynamic dosage by concentrate compensation of degrading |
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| CN110575676A (en) * | 2019-09-25 | 2019-12-17 | 泉州洛江吉如机械设计有限公司 | sanitary towel production is with concentrated light-operated wall from mechanical equipment |
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| Publication number | Publication date |
|---|---|
| CN103318980B (en) | 2014-08-20 |
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Effective date of registration: 20231214 Address after: No. 8 Xinggang East Road, Dagang, New District, Zhenjiang City, Jiangsu Province, 212132 Patentee after: Jinlong Pulp and Paper Industry (Jiangsu) Co.,Ltd. Address before: 212132, No. 8 Tung Hing East Road, Dagang, Jiangsu, Zhenjiang Patentee before: Goldeast Paper (Jiangsu) Co.,Ltd. |